Numbers k such that 5*2^k - 7 is prime.

Terms

a(0) =1a(1) =2a(2) =4a(3) =6a(4) =10a(5) =16a(6) =30a(7) =32a(8) =52a(9) =68a(10) =78a(11) =84a(12) =118a(13) =136a(14) =154a(15) =406a(16) =488a(17) =696a(18) =752a(19) =880a(20) =2754a(21) =3922a(22) =3976a(23) =4888a(24) =5866a(25) =51084a(26) =55744a(27) =61000a(28) =121188a(29) =122608